Paper fastening device



Sept. 17, 1935.

PAPER FASTENING DEVICE Filed Dec. 26, 1953 NVENTORZ.

ATTORNEY A. POWELL 2,014,780

Patented Sept. 17, 1935 UNITED STATES PATENT OFFICE PAPER FASTENINGDEVICE Alvin Powell, Lafayette, Calif.

Application December 26, 1933, Serial No. 703,928

3 Claims.

This invention is for improvements in letter binders for securingletters in a folder in such manner as to render each individual lettereasy of access and in which the individual letters may be turned andread as the leaves of a book.

The primary object of the invention is to provide a letter binder forletters when filed in a folder which will be yieldable and conform tothe flat surfaces of the letters within the folder as the accumulationof letters within the folder is built up and not cause a bulge along thefolding line of the folder.

A further object of the invention is to provide a device of thecharacter indicated that will be efficient, reliable, durable andsecurely retain letters filed in a folder in a neat and orderly mannerin the form of a book.

Other objects and advantages of the invention will appear as thespecification thereof proceeds.

The invention will be hereinafter fully set forth and particularlypointed out in the claims.

In the accompanying drawing:-

Figure 1 is an end elevation of a folder with the sides extended andletters secured therein by the improved binder.

Fig. 2 is a plan view of a fragmentary section of a folder in openposition with the improved binder secured to one leaf of the folder.

Fig. 3 is a plan view of a fragmentary section of a folder in openposition with the improved binder in locked position, and secured to oneof the leaves of a folder.

Fig. 4 is a perspective View of the binder in upright position shown asattached to a section of one of the leaves of a folder with the binderin locked position.

Like reference characters indicate like parts throughout the severalfigures of the drawing.

Referring to the drawing, A designates the improved letter binder as anentirety, the same preferably comprising a base l0 and a locking stripl2 extending from one end of the base, and provided with a free end.Said base is provided with an elongated aperture or slot l I adjacentthe transverse median line thereof, and said locking strip is providedwith a similar longitudinally disposed slot l6 adjacent its free end.The base I0 is also provided with a hook-like extension l5 extendingfrom the end opposite to the strip l2, and shaped to provide a notch I1.

In practice, each of the sheets M to be bound together is provided witha perforation l3 adjacent one edge, through which the locking strip isthreaded in a manner indicated in Fig. 1. The

free end of the strip is then passed through the base slot I l and thehook l5 passed through the slot in a manner to force the apex of thenotch il into engagement with the side of said slot, thus forming asubstantially square ring for 5 firmly and positively securing theletter sheets l4 within the folder covers of folder 2|, which is foldedalong its median line 18, thus forming covers l9 and to either of whichbase It! may be secured in any suitable manner, preferably by 10cementing.

The base H3 is secured to cover 19, as shown in Figure 1 of the drawingwith the inner wall of aperture H in alinement with the line of fold l8of the folder forming covers IS! and 20.

Reduced portion I2 is scored at predetermined spaced apart points Z2,Z3, 24 and 25 to facilitate the folding of the strip I2 in the formingof the substantially square ring 26 for binding the letters It into asheaf as clearly shown in Fig. 1.

Having thus explained the nature of the invention and described anoperative manner of constructing and using the same, although withoutattempting to set forth all the forms in which it may be made, or allthe forms of its use what 25 is claimed is:

1. A letter binder comprising a'body of flexible material provided witha base having a slot therein, a locking strip extended from one end ofsaid base and insertable through said slot, said strip 30 also having aslot therein, and means at the other end of said base engageable withthe slot of said strip for preventing withdrawal of the end of the stripthrough said base slot.

2. A letter binder comprising a body of glazed flexible materialprovided with a base having a slottherein, a locking strip of reducedwidth extended from one end of said base and having a free endinsertable through said slot, said strip also having a slot therein, andmeans at the other end of the base engageable with the slot of saidstrip for preventing withdrawal of the free end of the strip throughsaid base slot.

3. A letter binder comprising a body of flexible material provided witha base having a slot therein, a locking strip extended from one end ofthe base and having a free end insertable through said slot, said stripalso having a slot contiguous to its free end, and a flat hook-likemember at the other end of the base constructed and 'arranged to engagethe slot of said strip for preventing withdrawal of the free end of thestrip through the slot in said base.

ALVIN POWELL.

